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Problem 12 Medium Difficulty

Arizonans use an average of 40 gal of water per person each day. The number of gallons $W$ of water used by $x$ Arizonans each day is modeled by $W=40 x$
a. Make a table that gives the number of gallons of water used for each 1000 -person change in population, from 0 to 5000.
b. What is the population of an Arizona town whose water usage is 120,000 gal per day?


a. $$\begin{array}{|l|l|}\hline \text { Number of persons }(x) & \text { Number of gallons of water used }(w) \\
\hline 0 & 0 \\\hline 1000 & 40,000 \\\hline 2000 & 120,000 \\\hline 3000 & 160,000 \\\hline 4000 & 200,000 \\\hline\end{array}$$
b. $3000$


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Video Transcript

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